How do I use Add a Keyconfig Preset?
Blender is not a preset it is only what Blender has become.
If you make a custom keyconfig and call it &quot;Swap MMB&quot; and change keyconfig that is what Blender and Blender 2 7 X and others are now.
In order to change everything back to default you have to make a new entry and call it something else. EG &quot;Default&quot; change all of keyconfig back to the original configuration, now all Blender and Blender 2 7 X and others are also.